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Questions asked by the same visitor
An X-Y graph with plots of observations allows sketching a trend line. What does the slope of the trend line represent
Weegy: A. the rate of change in accuracy of the data (More)
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Expert Answered
Asked 6/3/2013 8:12:35 AM
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Which of the following is always true when a substance undergoes a physical change? A. the composition changes B. a change in color occurs C. no new substance is formed D. its specific gravity remains the same
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Updated 199 days ago|10/19/2015 7:01:22 AM
1 Answer/Comment
"No new substance is formed" is always true when a substance undergoes a physical change.
Added 199 days ago|10/19/2015 7:01:22 AM
This answer has been added to the Weegy Knowledgebase
A substance that readily burns when it comes into contact with a flame has the chemical property of _____. A. toxicity B. stability C. reactivity D. combustibility
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Not Answered
Updated 167 days ago|11/19/2015 5:51:32 PM
1 Answer/Comment
A substance that readily burns when it comes into contact with a flame has the chemical property of Combustibility.
Added 167 days ago|11/19/2015 5:51:32 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Janet17 [11/19/2015 5:57:03 PM]
If a chemical change requires energy, which of the following could be the source of the energy? A. heating with a flame B. settling the mixture for 20 minutes C. measuring mass from a balance beam D. adding more substance to the observed material
Question
Not Answered
Updated 168 days ago|11/19/2015 12:44:46 AM
1 Answer/Comment
If a chemical change requires energy, heating with a flame could be the source of the energy.
Added 168 days ago|11/19/2015 12:44:46 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [11/19/2015 4:25:45 AM]
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